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<div id="overview"><a href="../../../../../../../../../../../../apidocs/org/sakaiproject/genericdao/springutil/ResourceFinder.html">View Javadoc</a></div><pre>

<a name="1" href="#1">1</a>   <em>/**<em>*</em></em>
<a name="2" href="#2">2</a>   <em> * $Id: ResourceFinder.html 11 2009-01-29 14:58:33Z azeckoski $</em>
<a name="3" href="#3">3</a>   <em> * $URL: http://genericdao.googlecode.com/svn/maven/site/xref/org/sakaiproject/genericdao/springutil/ResourceFinder.html $</em>
<a name="4" href="#4">4</a>   <em> * ResourceFinder.java - blog-wow - May 6, 2008 9:59:05 PM - azeckoski</em>
<a name="5" href="#5">5</a>   <em> **************************************************************************</em>
<a name="6" href="#6">6</a>   <em> * Copyright (c) 2008 Aaron Zeckoski</em>
<a name="7" href="#7">7</a>   <em> * Licensed under the Apache License, Version 2</em>
<a name="8" href="#8">8</a>   <em> * </em>
<a name="9" href="#9">9</a>   <em> * A copy of the Apache License, Version 2 has been included in this </em>
<a name="10" href="#10">10</a>  <em> * distribution and is available at: <a href="http://www.apache.org/licenses/LICENSE-2.0.txt" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0.txt</a></em>
<a name="11" href="#11">11</a>  <em> *</em>
<a name="12" href="#12">12</a>  <em> * Aaron Zeckoski (azeckoski@gmail.com) (aaronz@vt.edu) (aaron@caret.cam.ac.uk)</em>
<a name="13" href="#13">13</a>  <em> */</em>
<a name="14" href="#14">14</a>  
<a name="15" href="#15">15</a>  <strong>package</strong> org.sakaiproject.genericdao.springutil;
<a name="16" href="#16">16</a>  
<a name="17" href="#17">17</a>  <strong>import</strong> java.io.File;
<a name="18" href="#18">18</a>  <strong>import</strong> java.io.IOException;
<a name="19" href="#19">19</a>  <strong>import</strong> java.io.InputStream;
<a name="20" href="#20">20</a>  <strong>import</strong> java.util.ArrayList;
<a name="21" href="#21">21</a>  <strong>import</strong> java.util.List;
<a name="22" href="#22">22</a>  
<a name="23" href="#23">23</a>  <strong>import</strong> org.springframework.core.io.ClassPathResource;
<a name="24" href="#24">24</a>  <strong>import</strong> org.springframework.core.io.Resource;
<a name="25" href="#25">25</a>  
<a name="26" href="#26">26</a>  <em>/**<em>*</em></em>
<a name="27" href="#27">27</a>  <em> * Allows for easy resolution of resources in the current {@link ClassLoader},</em>
<a name="28" href="#28">28</a>  <em> * (which may not be the {@link ClassLoader} being used by Spring)&lt;br/></em>
<a name="29" href="#29">29</a>  <em> * Primarily useful when you need to locate resources while running in a Sakai component</em>
<a name="30" href="#30">30</a>  <em> * (like HBM files or SQL files)&lt;br/></em>
<a name="31" href="#31">31</a>  <em> * In Sakai, this allows us to find resources in our pack since the Sakai context {@link ClassLoader} is wrong,</em>
<a name="32" href="#32">32</a>  <em> * too bad it is not correct, that would be cool, but it is wrong and it is not cool&lt;br/></em>
<a name="33" href="#33">33</a>  <em> * Takes a list of paths to resources and turns them into legitimate resources&lt;br/></em>
<a name="34" href="#34">34</a>  <em> * &lt;xmp>&lt;bean class="org.sakaiproject.genericdao.springutil.ResourceFinder" factory-method="getResources"></em>
<a name="35" href="#35">35</a>  <em>       &lt;constructor-arg></em>
<a name="36" href="#36">36</a>  <em>           &lt;list></em>
<a name="37" href="#37">37</a>  <em>               &lt;value>org/sakaiproject/blogwow/dao/hbm/BlogWowBlog.hbm.xml&lt;/value></em>
<a name="38" href="#38">38</a>  <em>               &lt;value>org/sakaiproject/blogwow/dao/hbm/BlogWowEntry.hbm.xml&lt;/value></em>
<a name="39" href="#39">39</a>  <em>               &lt;value>org/sakaiproject/blogwow/dao/hbm/BlogWowComment.hbm.xml&lt;/value></em>
<a name="40" href="#40">40</a>  <em>           &lt;/list></em>
<a name="41" href="#41">41</a>  <em>       &lt;/constructor-arg></em>
<a name="42" href="#42">42</a>  <em>   &lt;/bean>&lt;/xmp></em>
<a name="43" href="#43">43</a>  <em> * </em>
<a name="44" href="#44">44</a>  <em> * @author Aaron Zeckoski (azeckoski@gmail.com)</em>
<a name="45" href="#45">45</a>  <em> */</em>
<a name="46" href="#46">46</a>  <strong>public</strong> <strong>class</strong> <a href="../../../../org/sakaiproject/genericdao/springutil/ResourceFinder.html">ResourceFinder</a> {
<a name="47" href="#47">47</a>  
<a name="48" href="#48">48</a>     <strong>private</strong> <strong>static</strong> List&lt;Resource> makeResources(List&lt;String> paths) {
<a name="49" href="#49">49</a>        List&lt;Resource> rs = <strong>new</strong> ArrayList&lt;Resource>();
<a name="50" href="#50">50</a>        <strong>if</strong> (paths != <strong>null</strong> &amp;&amp; !paths.isEmpty()) {
<a name="51" href="#51">51</a>           ClassLoader cl = ResourceFinder.<strong>class</strong>.getClassLoader();
<a name="52" href="#52">52</a>           <strong>for</strong> (String path : paths) {
<a name="53" href="#53">53</a>              Resource r = <strong>new</strong> ClassPathResource(path, cl);
<a name="54" href="#54">54</a>              <strong>if</strong> (r.exists()) {
<a name="55" href="#55">55</a>                 rs.add(r);
<a name="56" href="#56">56</a>              }
<a name="57" href="#57">57</a>           }
<a name="58" href="#58">58</a>        }
<a name="59" href="#59">59</a>        <strong>return</strong> rs;
<a name="60" href="#60">60</a>     }
<a name="61" href="#61">61</a>  
<a name="62" href="#62">62</a>     <em>/**<em>*</em></em>
<a name="63" href="#63">63</a>  <em>    * Resolves a list of paths into resources within the current classloader</em>
<a name="64" href="#64">64</a>  <em>    * @param paths a list of paths to resources (org/sakaiproject/mystuff/Thing.xml)</em>
<a name="65" href="#65">65</a>  <em>    * @return an array of Spring Resource objects</em>
<a name="66" href="#66">66</a>  <em>    */</em>
<a name="67" href="#67">67</a>     <strong>public</strong> <strong>static</strong> Resource[] getResources(List&lt;String> paths) {
<a name="68" href="#68">68</a>        List&lt;Resource> l = makeResources(paths);
<a name="69" href="#69">69</a>        <strong>return</strong> l.toArray(<strong>new</strong> Resource[l.size()]);
<a name="70" href="#70">70</a>     }
<a name="71" href="#71">71</a>  
<a name="72" href="#72">72</a>     <em>/**<em>*</em></em>
<a name="73" href="#73">73</a>  <em>    * Resolves a list of paths into resources within the current classloader</em>
<a name="74" href="#74">74</a>  <em>    * @param paths a list of paths to resources (org/sakaiproject/mystuff/Thing.xml)</em>
<a name="75" href="#75">75</a>  <em>    * @return an array of File objects</em>
<a name="76" href="#76">76</a>  <em>    */</em>
<a name="77" href="#77">77</a>     <strong>public</strong> <strong>static</strong> File[] getFiles(List&lt;String> paths) {
<a name="78" href="#78">78</a>        List&lt;Resource> rs = makeResources(paths);
<a name="79" href="#79">79</a>        File[] files = <strong>new</strong> File[rs.size()];
<a name="80" href="#80">80</a>        <strong>for</strong> (<strong>int</strong> i = 0; i &lt; rs.size(); i++) {
<a name="81" href="#81">81</a>           Resource r = rs.get(i);
<a name="82" href="#82">82</a>           <strong>try</strong> {
<a name="83" href="#83">83</a>              files[i] = r.getFile();
<a name="84" href="#84">84</a>           } <strong>catch</strong> (IOException e) {
<a name="85" href="#85">85</a>              <strong>throw</strong> <strong>new</strong> RuntimeException(<span class="string">"Failed to get file for: "</span> + r.getFilename(), e);
<a name="86" href="#86">86</a>           }
<a name="87" href="#87">87</a>        }
<a name="88" href="#88">88</a>        <strong>return</strong> files;
<a name="89" href="#89">89</a>     }
<a name="90" href="#90">90</a>  
<a name="91" href="#91">91</a>     <em>/**<em>*</em></em>
<a name="92" href="#92">92</a>  <em>    * Resolves a list of paths into resources within the current classloader</em>
<a name="93" href="#93">93</a>  <em>    * @param paths a list of paths to resources (org/sakaiproject/mystuff/Thing.xml)</em>
<a name="94" href="#94">94</a>  <em>    * @return an array of InputStreams</em>
<a name="95" href="#95">95</a>  <em>    */</em>
<a name="96" href="#96">96</a>     <strong>public</strong> <strong>static</strong> InputStream[] getInputStreams(List&lt;String> paths) {
<a name="97" href="#97">97</a>        List&lt;Resource> rs = makeResources(paths);
<a name="98" href="#98">98</a>        InputStream[] streams = <strong>new</strong> InputStream[rs.size()];
<a name="99" href="#99">99</a>        <strong>for</strong> (<strong>int</strong> i = 0; i &lt; rs.size(); i++) {
<a name="100" href="#100">100</a>          Resource r = rs.get(i);
<a name="101" href="#101">101</a>          <strong>try</strong> {
<a name="102" href="#102">102</a>             streams[i] = r.getInputStream();
<a name="103" href="#103">103</a>          } <strong>catch</strong> (IOException e) {
<a name="104" href="#104">104</a>             <strong>throw</strong> <strong>new</strong> RuntimeException(<span class="string">"Failed to get inputstream for: "</span> + r.getFilename(), e);
<a name="105" href="#105">105</a>          }
<a name="106" href="#106">106</a>       }
<a name="107" href="#107">107</a>       <strong>return</strong> streams;
<a name="108" href="#108">108</a>    }
<a name="109" href="#109">109</a> 
<a name="110" href="#110">110</a> }
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